How to grant service account access to a user account on google cloud

Question

I have a problem with gcloud command and spends a week how to fix. When I ran gcloud command gcloud auth revoke, I get the following error.

WARNING: This command is using service account impersonation. All API calls will be executed as [xxx@gmail.com]. // xxx@gmail.com is my user account which is the owner of the project.
ERROR: (gcloud.iam.service-accounts.create) Failed to impersonate [xxx@gmail.com]. Make sure the account that's trying to impersonate it has access to the service account itself and the "roles/iam.serviceAccountTokenCreator" role.

To fix this, I created a service account which has "roles/iam.serviceAccountTokenCreator" role and grant the policy to xxx@gmail.com. But it it does not work.

The detailed error is below (ran the command with "--log-http").

=======================
==== request start ====
uri: https://oauth2.googleapis.com/token
method: POST
== headers start ==
content-type: application/x-www-form-urlencoded
user-agent: google-cloud-sdk gcloud/310.0.0 command/gcloud.auth.revoke invocation-id/xxx environment/None environment-version/None interactive/True from-script/False python/2.7.16 term/xterm-256color (Macintosh; Intel Mac OS X 19.2.0)
== headers end ==
== body start ==
Body redacted: Contains oauth token. Set log_http_redact_token property to false to print the body of this request.
== body end ==
==== request end ====
---- response start ----
status: 200
-- headers start --
-content-encoding: gzip
alt-svc: h3-29=":443"; ma=2592000,h3-T051=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
cache-control: no-cache, no-store, max-age=0, must-revalidate
content-length: 1389
content-type: application/json; charset=utf-8
date: Sun, 22 Nov 2020 00:59:28 GMT
expires: Mon, 01 Jan 1990 00:00:00 GMT
pragma: no-cache
server: scaffolding on HTTPServer2
transfer-encoding: chunked
vary: Origin, X-Origin, Referer
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-xss-protection: 0
-- headers end --
-- body start --
Body redacted: Contains oauth token. Set log_http_redact_token property to false to print the body of this response.
-- body end --
total round trip time (request+response): 0.207 secs
---- response end ----
----------------------
=======================
==== request start ====
uri: https://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/xxx@gmail.com:generateAccessToken
method: POST
== headers start ==
Content-Type: application/json
authorization: Bearer xxx
user-agent: google-cloud-sdk gcloud/310.0.0 command/gcloud.auth.revoke invocation-id/xxx environment/None environment-version/None interactive/True from-script/False python/2.7.16 term/xterm-256color (Macintosh; Intel Mac OS X 19.2.0)
== headers end ==
== body start ==
Body redacted: Contains oauth token. Set log_http_redact_token property to false to print the body of this request.
== body end ==
==== request end ====
---- response start ----
status: 404
-- headers start --
-content-encoding: gzip
alt-svc: h3-29=":443"; ma=2592000,h3-T051=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
cache-control: private
content-length: 114
content-type: application/json; charset=UTF-8
date: Sun, 22 Nov 2020 00:59:28 GMT
server: ESF
transfer-encoding: chunked
vary: Origin, X-Origin, Referer
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-xss-protection: 0
-- headers end --
-- body start --
Body redacted: Contains oauth token. Set log_http_redact_token property to false to print the body of this response.
-- body end --
total round trip time (request+response): 0.389 secs
---- response end ----
----------------------

Another thing it makes me confused is gcloud auth revoke does not work, but gcloud auth login and gcloud auth list works without any errors.

If anyone had faced this issue and knows how to solve this, I would like to know how. Thank you.

Answer 1

I found that I set my user account as impersonated service account which does not make any sense.

After I ran gcloud config unset auth/impersonate_service_account, it works as expected. Thanks.